So, you’ve made it to the second quiz in our Easy section of Eleven Plus maths dealing with Time (if you haven’t yet played the previous ones, I suggest you do so now). Like the first, this quiz will ask you to solve some problems involving the 24-hour clock.

Last time we supplied you with a conversion table to make things a little easier. They’ll be no such help this time! But there are some tips which you can remember:

- 12 am (midnight) is 00:00 on a 24-hour clock
- 12 pm (noon) is 12:00 on a 24-hour clock
- All other am times are the same as on a 12-hour clock (but put a 0 in front of single-digit hours)
- All other pm times are converted to 24-hour times by adding 12 to the hours

It sounds quite complicated, but 24-hour clocks are a piece of cake once you’ve got your head around them. Have a go at this quiz to find out whether or not you need more practice.

1.

It is 10:45 am and Matthew must start work in 3 hours and 15 minutes. At what time does Matthew start work?

02:00

14:00

01:45

13:45

10:45 plus 3 hours is 13:45, then we add 15 minutes to make it 14:00. That’s two o’clock in the afternoon

2.

It is quarter past six in the morning. How would this show on a 24-hour clock?

05:45

06:15

17:45

18:15

This is read as 'zero six fifteen hours'

3.

It is ten to nine in the evening. How would this appear on a 24-hour clock?

21:10

20:50

21:50

08:50

Ten to nine in the morning would be 08:50. To convert am to pm just add 12 to the hours

4.

The time is twenty-seven minutes to seven in the evening. How would this be shown on a 24-hour clock?

07:27

06:33

19:27

18:33

Twenty-seven minutes to seven in the morning would be 06:33

5.

Emma’s train home from work arrives at 18:07. What time is Emma’s train due?

7 minutes past six in the morning

7 minutes to six in the morning

7 minutes past six in the evening

7 minutes to six in the evening

TIP: If the hour is later than 12 (i.e. 13-23) simply subtract 12 and put pm after it. So, 18:07 = 6:07 pm

6.

How would one-minute past 12 pm appear on a 24-hour clock?

12:01

00:01

11:59

23:59

12 pm is 12:00 while 12 am is 00:00

7.

Every October we put the clocks back one hour at 02:00. What time do we set them to?

15:00

03:00

13:00

01:00

One hour before 02:00 is 01:00

8.

Julie’s watch is running two hours slow. It says 9:45 am. What is the real time on a 24-hour clock?

09:45

21:45

23:45

11:45

Two hours after 09:45 is 11:45 – quarter to 12 in the morning

9.

James wants to catch a bus scheduled to arrive at 17:23. What time is the bus due?

23 minutes past five in the afternoon

23 minutes past five in the morning

23 minutes to five in the afternoon

23 minutes to five in the morning

TIP: If the hour is later than 12 (i.e. 13-23) simply subtract 12 and put pm after it. So, 17:23 = 5:23 pm

10.

A 24-hour clock shows 22:22. What time is it?

Twenty-two past 10 in the evening

Twenty-two to 10 in the evening

Twenty-two minutes past 10 in the evening

Twenty-two minutes to 10 in the evening

We have to add the word ‘minutes’ because 22 is not divisible by 5